I currently have a Eleaf Istick 20, with a anyvape davide tank using aspire BDC replacement coils, I am running at the lowest possible 3.0v and 5.0w which I find fine when it works correctly. Any change of setting and I find its too harsh and leave a bad taste on my tongue. I am going through coils like no tommorow as always saying no or low atomizer and now the button has gone funny. Any recommendation as to what to get next would be much appreciated as the internet has boggled me!